32" hotr 90+mph

[6sHyper]

I think he will be damn close, if not there. Maybe with a little prop tweaking. I just want to make sure he knows that this is not a good long term sport setup. I am trying to make it clear. Anyone can throw a lot of voltage at a motor with a lot of kv. Newbies (not meaning Howard) may think this is the best way to go. The gear will all be pushing and or past it's limit.

Howard has made it clear that he wants 90mph, and if he loses his boat trying.. so be it. I have no problem with that.

I dont think "newbies" are the only ones who think that is the way to go, alot of people, myself included dont really give a *!***!***!***!** if the setup smokes out after a while, the whole intention was to push the limits, so to get upset over pushing them would be pointless. I myself enjoy the speed more than anything, look at it like Golf, the whole point is to try and beat your best score, well rc boating for me is all about trying to beat my highest MPH. I have just started with rc boats a few months ago, but thats not the point, its my mentailty and its not gonna change anytime soon.

i think Howard has a mentality like mine, and i will be keeping an eye on this topic for your video Howard, the genesis is badass, and i might just have to compy one of your builds here pretty quick!!!

[Rumdog]

Only newbies, and guys with deep pockets think this is the only way to go.

[Howard Lee]

http://www.leopardhobby.com/product/product_veiws.asp?id=1387&functionID=01020201

[rearwheelin]

I have a 03'' R1, she turn 9,500 rpm at 150 mph in 6th gear and about 172 mph at 11,000k , I haven't red lined in 6th yet, no need to , fast enouph....

[Howard Lee]

I have a 03'' R1, she turn 9,500 rpm at 150 mph in 6th gear and about 172 mph at 11,000k , I haven't red lined in 6th yet, no need to , fast enouph....

A 03 will only do about 172 mph.

[6sHyper]

I have a 03'' R1, she turn 9,500 rpm at 150 mph in 6th gear and about 172 mph at 11,000k , I haven't red lined in 6th yet, no need to , fast enouph....

I had an 03 R1 too, untill i was show boating and popped a wheelie in to a backflip at 130km/hr and hamburgered my entire left side as i was wearing T-shirt and shorts, yeah wasn't that cool...........................

[rearwheelin]

A 03 will only do about 172 mph.

She still had a little poke but the red line is at 11,500 so I call her as fast as the new ones cause they are all 185 mph bike, some just get there faster

[keithbradley]

Dude you know how to get action on a thread for sure Say "90mph" and everybody shows up.lol

You don't need to be a smart ass, if you need to know something then just ask. This is what i was told 33.3 x 120 x 90 / 746 = 4.82 . This is not my first boat. My genesis is faster then most. I'm not here to put people down, the things i have put in this thread is what has worked for me.

You wont get 90% efficiency at the load and RPM you are going for. My guess would be at most, 60%. At that high of RPM and load, it wont pull 120A either. The amp rating on the motor is what it is rated to handle, not what it draws. For example, my castle 1520-1y (1600kv) with a prather s225 prop (one size smaller than yours), on only 6s pulled 209A. That is also a 120A rated motor. My guess is you will be closer to 300A, and less than 33.3v (they will drop significantly when current rises that high), and somewhere between 40-60 efficiency%. That's just a guess, but I bet its closer than your estimate.

It doesnt mean you won't be pulling serious wattage, I think you will be pulling a lot more than you estimate even.

To the guy that said it will pull 90A...
Keep running boats. You'll figure it out. Unless the prop comes off he's not going to be anywhere near 90A.

Good luck Howard. I can't wait to see the video.

[rearwheelin]

I had an 03 R1 too, untill i was show boating and popped a wheelie in to a backflip at 130km/hr and hamburgered my entire left side as i was wearing T-shirt and shorts, yeah wasn't that cool...........................

I think a 03 will smoke Howards boat in first gear...lol.......My favorite is to roll threw freeway on ramps in second and giver a hand full of throttle as the front end climbs high I back out of it and before it hits the pavement I get back into it and then let off around 11k and seter back down nice and easey .....then look down and am doing a buck-05....

[TotalPackage]

dam that thing looks sharp

[TotalPackage]

Yeah Keith his load placed on the motor by the prop is what will dictate his amp draw .Correct? so he can dictate his ouput like that ? So when u go past its load limit or max draw thats heat time right? Plus the true amp ability is the locked rotor amp draw right ?It would surely fry

but i can certainly say those estimates were theory which is waiting to be proven wrong speaking of the earlier ones mentioned not yours

[wraith]

Back to the r1 discussion... If I remember right, an 05 r1 hits rev limiter at 99mph in 1st, and is GEARED to do 199mph in 6th gear. computer restricted to 186mph (i think)

ok back on topic. cant wait to see this cat do 90, and see you brothers' boil the lake!!

[rearwheelin]

Dude you know how to get action on a thread for sure Say "90mph" and everybody shows up.lol



You wont get 90% efficiency at the load and RPM you are going for. My guess would be at most, 60%. At that high of RPM and load, it wont pull 120A either. The amp rating on the motor is what it is rated to handle, not what it draws. For example, my castle 1520-1y (1600kv) with a prather s225 prop (one size smaller than yours), on only 6s pulled 209A. That is also a 120A rated motor. My guess is you will be closer to 300A, and less than 33.3v (they will drop significantly when current rises that high), and somewhere between 40-60 efficiency%. That's just a guess, but I bet its closer than your estimate.

It doesnt mean you won't be pulling serious wattage, I think you will be pulling a lot more than you estimate even.

To the guy that said it will pull 90A...
Keep running boats. You'll figure it out. Unless the prop comes off he's not going to be anywhere near 90A.

Good luck Howard. I can't wait to see the video.

Back to the r1 discussion... If I remember right, an 05 r1 hits rev limiter at 99mph in 1st, and is GEARED to do 199mph in 6th gear. computer restricted to 186mph (i think)

ok back on topic. cant wait to see this cat do 90, and see you brothers' boil the lake!!

One last piece of advice bro , give your system a good pre cooling by tying in a weed sprayer to your rudder pickup line and pump some ice water threw it, it will chill everything down to the low 40's before you run 300 amps threw your esc , electricity flows a-lot better when things are cold (accept batts). This is what I did at the L.A. SAWS with my quad drive powered with 4 casle 1y's on 6s with only 2500mah per motor, I didn't have enouph juice to even run the motors and ended up distroying my lipo's, I can only imagine the kind of voltage spikes that were hiting my esc, they shold have burned....lol....my best pass was 79mph,,,,I should have been in the upper 80's, low 90's........

[ray schrauwen]

He may just mean throttle and the makers meaning Leopard most likely. The specs say you can run 9S and so he does. Trading high current for high voltage. Lots of fun!!!

Do it Howard!!

[Howard Lee]

Back to the r1 discussion... If I remember right, an 05 r1 hits rev limiter at 99mph in 1st, and is GEARED to do 199mph in 6th gear. computer restricted to 186mph (i think)

ok back on topic. cant wait to see this cat do 90, and see you brothers' boil the lake!!

My r1 is a 06 with a power commander, so it has not limits on rev or top speed. You are right this bike will do 99 in 1st gear. Its geared for 199 but will never hit that. The engine don't have the power to push that gear. Stock they will go about 180. My top speed is 190.